This is the SC3650 In-Line Piston Hybrid Cannon. The entire build log from beginning to end is in the link below. I'll just show the cannon here and keep it simple. http://www.spudfiles.com/hybrid-cannons/topic26921.html [youtube]https://youtu.be/azEhKVAz5gE[/youtube] [youtube]https://youtu.be/OUsugYUM3WE[/youtube] ...

Vacuum cannons can go supersonic and Hybrid cannons can go supersonic. So, what happens if you have something like a burst-disc hybrid with a big, vacuumed barrel sitting in front of it? Supersonic + supersonic = singularity?

Do the math

... still at it! Any of the old regulars still around? Hardly anyone unfortunately, but some interesting new blood and innovation, like a semi-auto hybrid . I got a build log incoming before too long. Looking forward to it! Feels good to be back and getting current again. Amen, I've recently abandoned ...

Welcome to the forum! Regarding fueling hybrids, I recommend looking here: http://www.spudfiles.com/hybrid-cannons/topic13602.html My preferred method is using syringe injection, though this is only practical ...

... while the first one is still in the barrel and much hilarity ensues :roll: but you will not have this problem in your system. I have used it for hybrid cartridges too during my long and to date still unfinished saga :roll:

I thought I would make a post on behalf of hectmarr to clarify the operation of his semi-automatic hybrid . Here is a schematic of the system: https://i.imgur.com/DIT1Dja.png Here is the cycle animated, springs are omitted for clarity: https://i.imgur.com/JxsQf5O.gif Here ...

... thread could be possible... https://i.imgur.com/tiMNEKL.png This time I do not understand very well what you mean ... Is it like a system of great cannons? is that? I was considering for a later version and more "neat" termination, using a half-turn coupling.

... guns for several years. I’ve built several combustion and pneumatic cannons but recently decided to build a hybrid. I’ve constructed it using sch40 steel pipe and will by placing my burst disc in a 1.5” ...

... http://picasion.com/i/2kdku but they are not cartridges, it is directly the weapon. This publication here: http://www.spudfiles.com/miniature-cannons/topic26503.html What you have to achieve, is a high turbulence of the flow of the primary combustion chamber, when it passes to the secondary ...

A question. Has not this been done already? I mean a semi automatic hybrid weapon? If we could get a plan, to adapt and build directly, this question ... documented in detail in this megathread: http://www.spudfiles.com/hybrid-cannons/topic19504.html To me, this is the most practical way to do it because ...

... hoping to get it vetted a bit. Perhaps if someone has an operational hybrid that uses volumetric metering they could test this out? A note about ... to volume. This ^^^ approach worked great for my smaller combustion cannons with small fuel meters. Also, if the ball valves used have a large ...

Very well presented, better than this hodge podge of ideas.

Have you thought of making an excel sheet where you can just punch in the relevant parameters and have it automatically calculated?

Does anybody want to direct me to a couple links on how to build a piston hybrid? I've built several combustion and pneumatic cannons.

... in the chamber before ignition. This pre ignition pressure makes hybrids much more powerful then basic combustion launchers but are more complex ... Pistonvalves and burst discs are the most used valve types in hybrid cannons. We normally talk about pre ignition pressures in hybrids as "4x ...